Attachment for car-heating systems.



PATENTED AUG. 16,1904.

E. H.1GOLD. Y ATTACHMENT FOR GAR HEATING SYSTEMS.

. APPLICATION FILED 1m. .1904. v 3w MODEL. a SHEETS-BEBET 1..

' No. 768,020. v u .PATENTED lure. 16, 1994 ATTACHMENT 1 0R. GAR HEATING SYSTEMS.

.APPLIOATION FILED JAILQ, 1904.

2 sums-sum 2.

I0 IODEL.

. .UNITED s -ATES Patented August 16, 19Q4.

PATENT 1 OFFICE. I i

'ATTACH I VIENT FOR CAR-HEATING SYSTEMS SPEGIFICATIONforming part of Letters Patent No. 768,020, dated August 16, 1904.

I Application filed January 9. 1904. Serial No. 188,368. (No modeh) To all whom it may concern Be it known that LEGBERT H. GOLD, a citizen of the United States, residing at Shelby, in the county of Lake and State of Indiana, have invented certain new and useful Improvements in Attachments for Car-Heating Systems, of

' which the following is a specification.

. means in operative contact with said circuit,

My invention consists in a new device for controlling the flow of water in filling carheating systems in-which a body of water is contained in a closed circuit and is heated by but not in actual contact therewith.

The object of my invention is to provide an automatically-operating device whereby in filling the radiating-pipes of such a system the water will be caused to travel in one direction, so as to exhaust all air-pockets and force the air out of the pipes in theopposite direction, while at the same time avoiding any possibility of a permanent obstruction to the normal flow through the circulating-pipes of the water when heated. These and such other objects as may hereinafter appear are attained by the device shown in the accompanying drawings, in which Figure 1 shows diagrammatically a typical system of piping for a Pullman car. Fig. 2 is a longitudinal section through my improved attachment. Fig. 3 is a cross-sectional view on the line 3 3 of Fig. 2 looking in the direction indicated by the arrows. Fig. 4 is a view dn the line 4 i of Fig. 2 looking in the direction indicated by the arrows, and Fig. 5 is a section on the line 5 f Fig. 2. Like characters of reference indicate the same parts in the several figures of the drawings. 'Refcrringto Fig. i, 1 indicates the trainpipe, 2 indicates the steam-pipes conducting steam from the train-pipe to the heaters 3 3.

3 4 indicates a steam-trap of any suitable form, 5 .5 are the expansion-tanks, 6 7 are the coils which are usually located in a Baker heater, (not shown',) 8 indicates the circulatin'g-pipes leading from the coil 6, 9 indicates the circulating-pipes leading from the coil 7, and 10 indicates my filling attachments. Although the piping of cars varies according to differing conditions, the piping shown is typ-,

,tainty of trapping air at many points.

ical, the car being heated by two separate water-circuits' 8 9, which are not connected with each other and in which the water may be heated by means of a Baker heater or by means of the steam-heaters, or by both jointly, one

set of pipes heating one side of the car and the other set heating the other side of the car.

Steam from the train-pipe is conducted through thei'eed-pipes 2'2 to the heaters 3 3 3 which are of a familiar type and constitute no part of my present invention, said heaters constituting steam-jackets surroundmg the water-p1pes,wh1ch pass therethrough. Following the clrculatlon in pipes 9, as indicat-,

ed by the arrows, the water rising through the coils 7 enters expansion-tank 5, thence passes downwardly and then lengthwise of ter-pipe 9 passes through the heater 3, thence upwardly to the end of the car, back, down, and again through the heater 3, againilengthwise of the car, then'back again downwardly under a plate and around in a curve or coil inastate-room. Thence returning the pipe passes through the heater 3 and thence up through the coil 7. In a similar manner the pipes 8, passing across the car, circulate in various loops and coils and return to the coil 6. It will thus be seen that in such a system of piping there are numerous coils and returns in which there is a tendency to trap air, and if in filling these circulating-pipes the water is allowed to flow in both directions.

from the point of entrance there is, a cer- The trouble caused by air in the circulating-pipes is wellzunderstood in this art and need not be here dwelt upon.

-Heretofore it has been customary to provide each set of circulating-pipes with a pair of cocks, to one of which the device for lilling the pipes is attached, the other of said cocks being open to allow the escape ot cold air. In the casting comprising these cocks and between the same has been located a hut-.

terfly-valve. which can be manually operated the car, thence beneath the car,where the \va-' to close the passage through the circulatingpipes, so that the water entering through one .cock will travel in one direction through the pipes, forcing the airahcad of it and out Lil - heated water.

through the other cock. hen the pipes are lilled, the cocks are closed and the butterflyvalve is then manually turned so as not to obstruct the passage through the circulating pipes. The objectiondue to this construction is the fact that the butterfly-valve must be manually operated and the danger of exploding the circulating-pipes if by any chance the butterfly-valve isnot opened after the pipes are .iiiied, for if the passage through the circuiating-pipes be closed when the heaters are applied to the system the water will soon be raised to such a temperature that steam will be generated and within a comparatively short time an explosion must ensue. To overcome this objection, I have provided my device which shall automatioall y close against the in"- coming current of water when the pipes are bei tilled, thereby insuring a complete exhaustion of air from the pipes, while atthe same time my device will automatically open for the circulation through the pipes of the i have also provided a simple and convenient means for insuring the attachment of the iiiiing device at the right point.

Referring to Fig. 2, 10 is a casing provided at opposite ends with ports, to which are at tached the water-pipes 9 of the circulating system. 'The casing 10 is also provided with two other ports, to which are attached the nipples A A, leading from the cooks B C. Arranged within the casing 10 and between the ports connecting with the nipples A A is a valve-seat D. E is a valve arranged to close the valve-seat D. in the preferred construction, as shown in the drawings, the valve E is loosely hung upon an arm F, which is pivoted to the upper part of the casing 10 in such a manner that the valveE will normally hang open; but it is entirely within the spirit of my invention to construct the device so that the valve E shall be normally seated upon the valve-seat D. Arranged within the casing 10 and opposite to thenipple A is a deflecting-web G. The valve-arm F is loosely swung upon a pin H, which can be mounted within the casing 10', as shown in Fig. 3, and secured in position by means ofa plug I. which is threaded into the casing 10 in the manner shown. For the purpose of assembling the parts the'casing 10 is provided at one side with a port, which is of sufiicient size to admit the. valve OD and the valve E and may be permanently ciosed by means of the plug J. The cocks B C may be conveniently operated by screw-heads KL, which are provided with pointers M to indicate the open and closed positions thereof. Preferably the port connecting with thenipple A is of reduced area, so as to facilitate the filling of the pipes.

It will be understood that it is necessary as the water fills the pipes to exhaust the air from any pockets where it might otherwise be trapped. By providing an outletot smaller area than the inlet I allow a free escape for the air and also provide for an outllowing current of water of less volume than the inflowing current. Thus theiiow of the water fills the pipes and also exhausts the air from all pockets within the pipes, so that the pipes are quickly filled with water-"arid freed from air-pockets. As the lilling apparatus usually comprises a nozzle externally scrcw-thrcudcd, i provide internal screw-tln'ezuls upon the end of the cock C and external threads upon the GOCli B, so that the lilling apparatus must ul ways be attached to the inlet-cock. Owing to the importance of keeping the circuits closed, in addition to closing the coclqs B (T when the pi "re lillcd the cocli "J is closed by plug screwed therein und the coelt B is closed bye cap N.

Vv'hilc i have shown the preferred i'orln of my device, it will he understood that my invention is not lihntcd to the specific einhodi' ment they-cor.

I claim"- 1. in a dericcot the class described, the combination with a casing provided with suil able ports for connection with the pipes ol a circulating system, and alswprovided with a filling-port and a vent-port, the area ol the vent-port being less than that of the lillingport, of an automatically o 'ierating valve mounted within said casing and arrui'igcd to prevent the passage oi water directly through said casing from the filling-port lothc ventport.

in a device or the class describcd, the combination of a casing n'ovided with suit.- able ports for connection with a system of circulating-pipes and provided with an inlet-port and a vent-porQof an :mtomaticnlly-opcruti ng valve mounted in said casing between said inlet-port and said vent-port, and 2L lvilectur :n' ranged adjacent to the inlet-port so as to di rect the iniiowing current of water against said valve in a direction to hold the valve in .closed position.

3. The combination with a closed circulating system provided with :1 nornnilly closed inlet and outlet, connections connecting with said inlet and outlet, respectively, the coin nection leading to said inlet being"- provided with means for receivinga fixture not adapted to be so received by the other connection.

' EGl-BERT li. GOLD.

Witnesses:

M. E. Smnnns, G. Y. DANKWARD. 

